Beating engine



L. SHLICK BEATING ENGINE July 31, 192s. I 1,619,059

Original Filed Feb. 17- 921 Ewe 121E,

LeoShlick 13y Patented July 31, 1928.

UNITED STATES PATENT OFFICE.

SHLICK, 013 BOSTON, MASSACHUSETTS.

BEATING EN GENE.

Original application filed February- 17, 1921, Serial No 445,736. Divided and this application filed February 1, 1927.

This invention relates to certain improve ments in machines for the production of ulp in the manufacture of paper, the same iieing divided out from -my application for patentfiled February 17, 1921, Serial No. 445,736 which has become Patent- 1,623,364.

In the drawings forming part of this specification, Fi 1 is a side view of a heating g ne embodying my improvements.

Wheel 6provided with avpluralit-y of'radi-- ally disposed partitions 7, and an axially disposed cylinder 9 apertured at 10 within the wheel, jut prolonged beyond the edge of the tub to discharge its contents into a 5 basin 11 from which a pipe 12 passes along the outside of the tub and thence in through the side of the latter to a mouth 13 in the face of the back-fall 14. This lifting wheel is rotated bythe flow of the stock toward the beater roll 3, and is thereby made to'elevate a portion of the stock, discharge it into the basin and then deliver it to the back-fall. The lifting wheel being covered at its ends with a fine screen 15, only the morefluid of the stock is delivered to the back-fall. This aids in ac'cel erating the flow of the pulp down and away from the tback-fall, by its introduction of a more fluid portion beneath the heavier stock; and it also aids in preventing precipitation of stock at the ends of the midfeather.

The hood 16 is pivotally supported at 17, and its free edge 19 is retained in position by means of arms 20 whose extremities 21 rest upon the bearing boxes 22 of'the beater roll axle 23. Hence, whenever the beater roll jumps because of-any sudden acumulation of lumps between it and the bed-plate, the edge or lip 19 rises also; and it can consequently remain close to the roll without danger of being struck by the fiy-bars of the latter. The hood being ivotally sup ported at 17 above the back 0 the backfall,

Serial No. 165,251,

its weight is made suflicient to retain its edge 19 close to the upper portion of theperiphcry of the roll during all normal conditions of the stock, but When abnormally large and tough lumps of stock come between the doctor 19 and the roll, which might cause in- 00 jury to the parts were the hood bound to the roll for its downward as well as its upward play, the hood can rise and permit the lumps to pass. As shown in Fig. 3, these fly-bars 24 are bent at their 'midlengths in 165 a manner to present the apex ofeach to the bed-plate, and thereby act to facilitate the expulsion of the entrained air from between them, and to permit the stock to enter more freely between the fly-bars and bed-plate, and to be more perfectly acted upon thereby. The hood 16 is given a curved arch, and

the back-fall is provided with an adjustable plate 25 whose upper portion is curved to a limited extent concentric with the arched hood, in order that as the stock is shot upward from the beater roll, it will pass freely along the curved under surface of the arch and'thence on in a direction parallel with the face of the back-fall and into the channel with an increased velocity. I have found that by having the hood 16 present an edge close to the beater roll so that the stock thrown up from the latter will have an unimpeded course along the under surface of the hood, and by having the curvature of the hood such that the stock therefrom will be discharged into the current of the stock passing down from the back-fall, at an ap proximate parallel thereto, it will materially speed up the How of stock. In beating engines which I have built thus constructed,

I have been able to practically double the speed of the stock-flow without having in- CI'EIBiLSGd the power required for rotating the re A portion of the stock will-go past the lip 19 of the hood. To receive this, a second hood 26, is located above the beater roll, having an, intermediate floor 29 and a dis-' 1 charge mouth 30, whereby the more fluid portion of the stock which passes over the beater roll will fly off from the latter at a tangent as it passes the topmost part -of the roll, and W111 be caught upon the floor 29 and delivered to the mouth 30; the quantitythereof being varied by means of an I adjusting gate 31 movabl'e ito'wardand from the-floor 29. ,Some of the stock still clinging to the beater roll will fly therefrom at a tanent below the floor 29 and will be likewise delivered to the mouth 30; this latter amount Ii being in its turn varied by adjusting the gate 32. That of the stock still clinging to .the fly-bars will be finally delivered to the bed-plate again and further macerated and in t e ends of the midfeather, and held atdesired oints by bolts 36. By thus-narrowina t e spaces between the heads 33 and the hand wheel 41 can be turned to when of the ends of the .tub, the danger of the stocks settling thereat and obstructing the flow is reduced to a minimum.

When all the stock in the tub 1 has been sufiiciently treated, the vertically slidable gate 37 at an end of the tub is slowliy lowered to (permit the stock to be discharge a screw ro 39 controlling the movement oi the gate. The gate should not, however, be lowered clear to the floor of the tub, but should sto with its top edge far enough above the oor to hold back all particles of 7 metal, and any hard lumps of pulp which had failed to be ground up. To aid inthis discharge, thegated end of the tub is supported upon one or more screw rods 40 and a hand wheel-nut 41 restingupon astandard 42, while the opposite end of the tub is an ported. upon pivotal le 43. as the level of the disc arging stock lowers, s the gated end of the tub and thereby. to assist in the drainage. I

As showninFig. 2, the back fall'14 uses to a height above the level of the topmost the beater roll 3,. wherebythe shot up and over the crest of the ackfall is given an impetus in its descent which atly increases its (1 of flow'along' the r channels of the tub. oreover, the hood 16 i I and h pperpOltiOll Of 3118 back-fa ven concentric-curves, whereby to he stock to shoot up and over the 25 are cause t back-fall and to follow the curve of the hood lumps of stoc and to thereb prevent the accumulation of which is otherwise liable to occur 'by the repeated diying thereon of smallamounts of the li ui stock they have accreted 'into mar ed obstructions to What Iclaim as my inventionisz 1. A beating en 'ne com l'lSlllg a beater roll, bed-plate, bac .-fall, an means for sep- Consequent y,

' lot the .3. A beating -'engine comprising a beater roll, a bed-plate, a back-fall having a cavity opening to itsback surface, and means for separating reaching e beaterroll, and delivering it into said cavity. 4. A beating engine comprising a'beater' roll, a bed-plate, a back-fall and means for separating part of the. stock from that aproachin said'beater roll and delivering-it. eyond t e back-fall, said means embracing a tubular conduit opening through to-the back face of the back-fall and having a laterally extended mouth thereat.

5. A beating en 'ne as set forth in claim 4 wherein the latera ly extended mouth is provided with a lip close above it.

6. A beating en ne com rising a heater pjart of the stock'from that apt roll, a bed-plate, a ack-fa'l and means for s. A beating en 'ne as set forth in claim 6,

the revolvin w eel whereof com rises a cylindrical s ell, radially dispose vanes, and a tubularaxle apertured between the vanes and projecting atone end beyond the said shell. g

9; A beatin engine comprising an elonwheel gated tub, a mldfeather therein, and a beater roll in one of the channels, an end ofthe 3 midfeather having a rounded head adjustan elon-' able relative to the adjacent endof the tub.

10. A beat enginecor'npri gated tub a mi feather therein a ter roll and a bed-plate in one of the channels, each end of the midfeather being provided with arounded head adjustable relative to adjacent end of the tub.

- 11. A beating engine comprising an elongated tub, having abe'ater. roll therein, the tub havin an o ening through its wall, and

a vertical ysli able gate thereiorprovided it to permit the with means. for lowering th b e tu escape over its top edge 0 9 contents.

" 12. A beating engine comprisingan elongated tub having beating mechanism therein, and an o ning throu an end wall, a vertically shdable-gate or said 0 ning, vertically adjustable support for t e gated end tub, and pivotal support for its other n 1 18. A beating engine as set forth in claim 11, the vertically slidable gate of which is provided with 'ad'usting means embracing a screw rod and a and wheel nut.

14. A beating engine comprising a tub, a heater roll, a back-fall, and a hood located above the back-fall and pivotally supported intermediate floor and adjustable gates.

at its rear edge, its weight being supported by the beater roll.

15.. A beating engine comprising a tub, a beater 'roll having, a shaft and vertically movable boxes for the latter,- an arched roof pivotally supported at its rear edge and hav-' 'ing its free edge close to the peri hery of 00d and said roll, and arms rigid with said rest ng upon said boxes.

16. A beating engine comprising a tub, a beater roll, and a stationary hood above said roll provided with a discharge mouth and an 17. A beating engine comprising a beater roll, a back-fall, and ahood located above the latter, and having'one edge almost contacting with and tangential to said roll, and

curved substantially concentric with the centric Withvthe upper portion of said pest and having its edge adj acent'said roll a the level approximately half way between that of thesaid crest and the axis. of said roll.

19; A beating engine comprising'a tub, a

midfeather, beater mechanism in one ofthe channels of thetub, and means for adjustably expanding and contracting the stock passages at the ends of. the midfeather.

20. A beating enginehaving a beater roll, I

a backfall, and a member provided with an edge close to the upper eripheryv of said roll, and performing the notion of a doctor, said member being pivotally supported from said periphery, means connected with thebeater roll whereby the upward movements thereof communicate upward movements to said edge, and gravitationally actuated means for lowering said edge and for preventing its being forced upward by the action of hard lumps of stock-comin be tween said edge and the periphery o the roll.

2 1. A beating engine having a beater roll a back-fallrising higher than the axis 0 said roll, vertically movable trunnions. carry-- ing said roll, and a hood pivotally supported at a point above the back of said backfall and having an edge close above the periphery of said" roll and supported therea't by stock." a I 22. A beating engine comprising a tub, a beater roll, a back-fall located back of the roll, and a curved hoodlocated above the back-fall, the curvature ofwhich hood approximates that of the beater roll, one edge of the hood being closeto the roll and its curvature being made to .direct'the stock which meets-it, obliquely downward at an angle nearly parallel 'to'the' stock flowing from the back-fall. v v

In testimony that I claim-the foregoing invention, I have hereunto set .my'hand this 18tli'day of January,1927

Leo semen.

to permit said edge to be swung toward and 'meansof said trunnions, said edge performs ing the function of a doctor, and said'hood being heavy. enough tohold said edge from 'yieldingto the impact of hard lumps of the 

